Most researchers believe that people who are blind from birth or who become blind in infancy do not see in their dreams. They do not retain visual imagery because it was never acquired in the first place.

However, those blinded in childhood, adolescence, young adulthood, or afterwards usually do see in their dreams. "They often retain visual imagery in their waking life and in their dreams," according to Drs Nancy Kerr of the Department of Psychology at Oglethorpe University and G. William Domhoff of the Department of Psychology at the University of California at Santa Cruz.